Introducing Actions: Add custom business logic to Hasura

Actions are a feature of Hasura that allow users to add custom business logic to their GraphQL API. They work well with existing CRUD operations and can be used in conjunction with serverless functions. Actions enable developers to maintain control over their data models, business logic, and security settings while leveraging the benefits of Hasura's scalable architecture and performance best practices. By using actions, users can create a command & query design that separates domain actions from model updates, making it easier to manage access control and maintain a consistent security posture. Additionally, Actions are not locked into any specific language or framework, allowing for flexibility in implementation.